private void InsertLoginLog() { objControllerLogin = new ControllerLogin(); string userName = string.Empty; using (PrincipalContext pc = new PrincipalContext(ContextType.Domain, Convert.ToString(Session["DomainName"]))) { UserPrincipal user = new UserPrincipal(pc); user = UserPrincipal.FindByIdentity(pc, Convert.ToString(Session["UserName"])); if (user != null) { userName = user.GivenName + " " + user.Surname; } else { userName = Convert.ToString(Session["UserName"]); } } objControllerLogin.InsertLoginLog(Convert.ToString(Session["NTID"]), Convert.ToString(Session["DomainName"]), Convert.ToString(userName)); }